defense department official declined to comment on the analysis, but the official said the u.s. asks north korea to follow a u.n. security council ban on launches involving ballistic technology. >>> the people who wont to be south korea's next president are mapping out their strategies in the lead-up to voting day. official campaigning is now under way. and so for the next three weeks candidates will be crisscrossing the country to sell their message. park geun hye of the ruling saenuri party is one of the front-runners. she visited a national cemetery in seoul where she paid respects to those who died in the korean war and other continflicconflic. park expressed her determination to become the country's first female president. >> translator: south korea has to choose whether it wants to move forward with a prepared future or go back to the past which is marked with failure. we are now standing at a crucial crossroads. >> park also said she will promise to build a nation where everyone can lead a happy life. she's locked in a tight race with moon jae-in of the opposition democra